Question

The amount of oxygen required to combust the 120gms of carbon

Answer 1

Answer:

C+O2-------------CO2

moles of carbon =240/12=20mol

mole ratio of carbon and oxygen is 1:1

so moles of oxgen is 20mol.

20*24=480dm^3 of oxygen is needed to combust with the 120 gms of carbon at room temperature (rtp).

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Answer 2

Answer:

C+O2--->CO2

So, for 1 mole of C, 1 mole of O2 of required, that is

for 12 g of C, (16*2) g of oxygen is required.

12g--->32g

120g-->Xg is required.

X=(120*32)/12

=3840/12

=320

Therefore, 320g of Oxygen is required.

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